9

AT49BV/LV160(T)/161(T)

1427L–FLASH–02/03

RDY/BUSY: For the AT49BV/LV161(T), an open-drain READY/BUSY output pin provides

another method of detecting the end of a program or erase operation. RDY/BUSY is actively

pulled low during the internal program and erase cycles and is released at the completion of

the cycle. The open-drain connection allows for OR-tying of several devices to the same

RDY/BUSY line. Please see “Status Bit Table” on page 12 for more details.

HARDWARE DATA PROTECTION: The Hardware Data Protection feature protects against

inadvertent programs to the AT49BV/LV16X(T) in the following ways: (a) V

below 1.8V (typical), the program function is inhibited. (b) V

reached the V

gramming. (c) Program inhibit: holding any one of OE low, CE high or WE high inhibits

program cycles. (d) Noise filter: pulses of less than 15 ns (typical) on the WE or CE inputs will

not initiate a program cycle. (e) Program inhibit: V

once V

INPUT LEVELS: While operating with a 2.65V to 3.6V power supply, the address inputs and

control inputs (OE, CE and WE) may be driven from 0 to 5.5V without adversely affecting the

(for minimum power).